Use the dmaengine_tx_status to simplify the code, do not change any logic.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the (xmit->tail > xmit->head) is true and the xmit->head is 0,
we only need one DMA scatterlist in actually. Current code uses two DMA
scatterlists in this case, this is obviously wrong.
This patch fixes it.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Assume the following situation:
If the DMA is enabled, and the a TX DMA operation is working,
But we have not issued the TX DMA operation (or we have issued the
TX DMA operation with dma_async_issue_pending(), but the DMA has not
started to move the data from the memory to the TXFIFO).
At this time, we may get the wrong status of the transmitter when we
call the imx_tx_empty. In such situation, only check the USR2_TXDC
does not enough for us.
This patch checks the DMA's situation, and return 0 when the TX DMA is
working.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current driver does not implement the flush_buffer hook for
uart_ops. When we enable the DMA for the driver, and test it with Bluetooth,
we may meet the following bug for TX:
[1] User application may call the flush operation at any time.
The uart_flush_buffer() calls the uart_circ_clear() to set
the xmit->head and xmit->tail with 0.
[2] The TX DMA callback can be called at any time too.
The dma_tx_call() will update the xmit->tail.
If [2] occurs just after the [1], we will get the wrong xmit->tail.
This patch implements the flush_buffer hook to fix this issue.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This deletes the .set_wake() callback in the struct uart_ops.
Apparently this has been unused since pre-git times. In the
old-2.6-bkcvs it is deleted as part of a changeset removing
the PM_SET_WAKEUP from pm_request_t which is since also deleted
from the kernel.
The apropriate way to set wakeups in the kernel is to have a
code snippet like this in .suspend() or .runtime_suspend()
callbacks:
static int foo_suspend(struct device *dev)
{
if (device_may_wakeup(dev)) {
/* Enable wakeups, set internal states */
}
}
This specific callback is not coming back.
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This callback is gone and not coming back, so will not be
supported later.
Cc: Johan Hovold <jhovold@gmail.com>
Acked-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This callback is gone and not coming back, so will not be
supported later.
Cc: Gerhard Sittig <gsi@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This callback is unused by the serial core since pre-git days
and is not coming back. Delete it. Enabling wakeup on the
SA1100 platforms should be done in the suspend() callback
so the platform hook is left in the serial port struct for
later enablement.
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This callback is unused by the serial core since pre-git days
and is not coming back. Delete it. Enabling wakeup on the
OMAP serial driver is done through other runpaths these days.
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
test echo_buf() result for ECHO_OP_START
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These aren't necessary after switch and while blocks.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a race between termios configuration and xmit that can cause the
intel_mid_ssp_spi driver to stall.
Serializing spi transactions fixes the problem.
Signed-off-by: Bin Gao <bin.gao@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should check the validity of the irq number before calling
disable_irq() and enable_irq() in the suspend/resume function,
as "max->irq == 0" means the irq is not enabled for max3110
device, otherwise it will hurt device whose irq number is really 0.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add calls to clk_prepare and unprepare so that EMMA Mobile EV2 can
migrate to the common clock framework.
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
[takashi.yoshii.ze@renesas.com: edited for conflicts]
Signed-off-by: Takashi Yoshii <takashi.yoshii.zj@renesas.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Turn the initial value of sysctl kernel.sysrq (SYSRQ_DEFAULT_ENABLE)
into a Kconfig variable.
Original version by Bastian Blank <waldi@debian.org>.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It makes more sense to enter a bitmask in hexadecimal rather than
decimal. Sadly we can't make it read back as hexadecimal.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Use unsigned types consistently for handling comedi sample data and also
for the USB data buffers.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Use unsigned types consistently for handling comedi sample data and also
for the USB data buffers.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Use unsigned types consistently in the "s626" module when dealing with
sample values.
Rewrite `s626_reg_to_uint()` as it can be done with a one-liner.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Use unsigned types for sample value manipulations in the "rtd520" driver
for consistency.
Also replace the hand-coded munging of 2's complement sample values with
calls to `comedi_offset_munge()` and AND with `s->maxdata` to strip off
any extra sign bits.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change `daqp_interrupt()` to use unsigned sample values for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change `pcmuio_handle_intr_subdev()` in the "pcmuio" module to use
unsigned sample values for consistency.
Also, make the order in which `pcmuio_handle_intr_subdev()` writes the
two sample values (each actually containing up to 16 1-bit sample
values) independent of the host byte ordering.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change `interrupt_pcmmio()` and `ai_rinsn()` in the "pcmmio" module to
use unsigned sample values for consistency.
Also, make the order in which `interrupt_pcmmio()` writes the two sample
values (each actually containing up to 16 1-bit sample values)
independent of the host byte ordering.
Note that this module is a mess, so please excuse the checkpatch
warnings.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the interrupt data transfer functions in the "pcl818" module to
use unsigned types for consistency.
Also remove the `short *ai_data` member of `struct pcl818_private` as it
is only assigned to and otherwise unused.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the "pcl816" module to use unsigned types to handle samples for
consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change `transfer_from_dma_buf()` and `interrupt_pcl812_ai_dma()` in the
"pcl812" module to use `unsigned short` sample values for consistency.
Also remove the `short *ai_data` member of `struct pcl812_private` as it
is only assigned to.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Don't cast the sample value parameter of `comedi_buf_put()` to `short`,
particularly as it has now been changed to `unsigned short`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change `nidio_interrupt()` to use unsigned types for sample values
(actually bit-vectors of 1-bit sample values) instead of signed types.
Also rename the `AuxData` variable to `auxdata` and change it from
`long` to `unsigned int` as it only needs to hold a 32-bit value.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ai_fifo_buffer[]` element of `struct
ni_board_struct` and the types of various local variables from `short`
to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the type of the `data` variable in `labpc_ai_cmd()` from `short`
to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented by unsigned values.
Change the type of the `dma_buffer` member of `struct a2150_private`
from `s16 *` to `uint16_t *`, and change the type of the `dpnt` variable
in `a2150_interrupt()` to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the types of various variables in the "me4000" driver dealing
with samples to use unsigned types for consistency.
Also replace the `long` or `unsigned long` variables used to handle
32-bit register values to `unsigned int`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ao_data[]` member of `struct
icp_multi_private` from `short` to `unsigned short` for consistency.
Also remove the `ai_data` and `di_data` members as they are not used.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ao_readback[]` member of `struct
fl512_private` from `short` to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the type of the `data` variable in `dt3k_ai_empty_fifo()` from
`short` to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change various members of `struct dt282x_private` and various parameters
and variables dealing with samples to use `unsigned short` instead of
`short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented by unsigned values.
Change the type of the `ao_update_bits` member of `struct
das1800_private` and the types of various local variables used to hold
sample values from `short` to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ai_buffer[]` member of `struct
das16m1_private_struct` and the types used by `munge_sample()` and
`munge_sample_array()` from `short` to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the type of the `data` variable in `das16_ai_munge()` from `short
*` to `unsigned short *` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are unsigned. Change the element type of
`ao_bounce_buffer[]` in `struct pcidas64_private` from `short` to
`unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented by unsigned values.
Change the element types of `ai_buffer[]`, `ao_buffer[]` and
`ao_value[]` in `struct cb_pcidas_private` to `unsigned short` for
consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Replace all uses of `short` to handle sample values in the
"amplc_pci230" driver with `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the type of the `ao_scan_vals` member of `struct pci224_private`
from `short *` to `unsigned short *` for consistency. Also change the
type of the `array` variable in `pci224_ao_munge()` from `short *` to
`unsigned short *`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ao_data[]` member of `struct
pci1723_private` from `short` to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ao_data[]` member of `struct
pci1710_private` from `short` to `unsigned short` for consistency. Also
remove the `ai_data` member as it is only assigned to. Change various
local variables used to hold sample values to `unsigned short`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the `ao_data[]` and `dmabuf_virt[]` members of `struct
pci9118_private` and various local variables dealing with sample values
to use `unsigned short` instead of `short` for consistency.
Also remove the `short *ai_data` member of `struct pci9118_private` as
it is only assigned to.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of the `ai_bounce_buffer[]` member of `struct
pci9111_private_data` from `short` to `unsigned short` for consistency.
Also change the type of the `array` variable in `pci9111_ai_munge()`
from `short *` to `unsigned short *`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
Change the element type of `ul_DmaBufferVirtual[2]` in `struct
addi_private` from `short *` to `unsigned short *` for consistency.
Note that several ADDI-DATA drivers use this struct from
"addi_common.h", but only the "addi_apci_3120" driver uses this member.
Also change the type of the `dma_buffer` parameter of
`v_APCI3120_InterruptDmaMoveBlock16bit()` from `short *` to `unsigned
short *`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
`subdev_8255_interrupt()` calls `comedi_buf_put()` with a `short` data
value merely because that's what was previously expected. Since it now
expects an `unsigned short`, change it here for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sample values in comedi are generally represented as unsigned values.
`cfc_write_to_buffer()` in "comedi_fc.h" currently uses `short` to hold
a 16-bit sample value to be written to the buffer. Change the type of
the parameter to `unsigned short` for consistency.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
